Hi Fabricia,
This error apparently happens when the root age is unknown and must be
estimated with other parameters. A fixed version of the function can be
found on ape's web site:
http://ape-package.ird.fr/
Best,
Emmanuel
Le 09/04/2014 17:28, Fabricia Nascimento a écrit :
Hi,
I am analyzing lots of trees in which I need it to be ultrametric. I decided to
use the function chronos, but in the middle of my run I got the following error
message which I don't know the meaning:
Error in nlminb(start.para, f, g, control = opt.ctrl, lower = LOW, upper = UP) :
NA/NaN gradient evaluation
Someone has previously notice a similar error but I could not find a reply
associated to the question
(http://www.mail-archive.com/r-sig-phylo@r-project.org/msg03208.html)
Thanks very much,
Fabricia.
[[alternative HTML version deleted]]
_______________________________________________
R-sig-phylo mailing list - R-sig-phylo@r-project.org
https://stat.ethz.ch/mailman/listinfo/r-sig-phylo
Searchable archive at http://www.mail-archive.com/r-sig-phylo@r-project.org/
_______________________________________________
R-sig-phylo mailing list - R-sig-phylo@r-project.org
https://stat.ethz.ch/mailman/listinfo/r-sig-phylo
Searchable archive at http://www.mail-archive.com/r-sig-phylo@r-project.org/
